System and method for clean energy seawater desalination coupled with salinity gradient energy power generation device

A technology for clean energy and power generation devices, used in chemical instruments and methods, seawater treatment, water/sewage treatment, etc., can solve problems such as power density decrease and membrane stack resistance increase, and achieve higher output power, output stability, and carbon reduction. The effect of emissions

Pending Publication Date: 2021-04-30
CHINA THREE GORGES CORPORATION
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In the reverse electrodialysis salt differential power generation process, the concentration of the solution has a great influence on the output power of the power generation. It will cause the resistance of the membrane stack to increase rapidly, and the power density will decrease instead.

Method used

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  • System and method for clean energy seawater desalination coupled with salinity gradient energy power generation device
  • System and method for clean energy seawater desalination coupled with salinity gradient energy power generation device
  • System and method for clean energy seawater desalination coupled with salinity gradient energy power generation device

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Embodiment 1

[0033] Embodiment 1: Taking seawater desalination as an example to carry out a specific embodiment to illustrate the present invention.

[0034] The whole system is divided into three modules, which are power supply system module, seawater desalination module and salinity difference energy generation module.

[0035]Among them, the power supply system module mainly supplies energy for the seawater desalination system, which is mainly composed of the wind power generation system 1, the photovoltaic power generation system 2, the energy storage device 5, the DC / AC converter 4, the first DC / AC converter 6 and the wind and solar hybrid control Device 3 is composed.

[0036] The photovoltaic power generation system 2 in the present invention generates direct current. Therefore, a DC / AC converter 4 is added to its output, and the specific ratio is controlled by the wind-solar complementary controller 3; In order to ensure the stability of power supply, an energy storage device 5 is...

Embodiment 2

[0058] Embodiment 2: take waste water as an example to carry out specific embodiment to illustrate the present invention. This solution is not only applicable to seawater desalination, but also to wastewater treatment scenarios. For wastewater treatment scenarios, the wastewater is inorganic industrial wastewater or domestic sewage. The concentrated water separated by the osmosis device, and the fresh water passed into the reverse electrodialysis device are one or more of rainwater or river water that has been pretreated by filtration.

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Abstract

The invention relates to a system and method for clean energy seawater desalination coupled with a salinity gradient energy power generation device, the system mainly comprises a power supply system module, a seawater desalination module and a salinity gradient energy power generation module, seawater desalination is completed by using a reverse osmosis technology, and power generation is carried out by using salinity gradient energy. Stable clean energy is used for reverse osmosis membrane method sea water desalination, meanwhile, high-salinity byproducts generated by sea water desalination are consumed through reverse electrodialysis salinity difference energy power generation, the environmental protection property of the whole sea water desalination process is improved, energy consumption is reduced, carbon emission is reduced, and economic benefits of sea water treatment are improved.

Description

technical field [0001] The present invention relates to clean energy seawater desalination and salt difference energy generation technology, and also relates to the treatment of waste water; in particular, it relates to a coupling between reverse osmosis membrane seawater desalination system and reverse electrodialysis salt difference energy generation system using wind-solar hybrid power generation . Background technique [0002] The gradual scarcity of water resources has led many countries to rely heavily on seawater desalination. But the sustainability of desalination remains an issue, both in terms of cost and its impact on the environment. [0003] At present, the relatively mature technologies for seawater desalination are mainly divided into two categories: distillation (thermal method) and membrane method. The technologies used by the vast majority of desalination plants in operation are multi-stage flash (MSF), multiple-effect evaporation (MDF) and reverse osmosi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10F03G7/00C02F103/08
CPCF03G7/005C02F9/00C02F2103/08C02F2201/007C02F2201/009C02F1/001C02F1/441C02F1/52C02F2001/007C02F1/66C02F2303/04C02F1/42C02F2001/422C02F2001/425C02F1/02C02F1/444C02F2303/10Y02A20/131
Inventor 王倩尹立坤唐博进蔺新星
Owner CHINA THREE GORGES CORPORATION
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